Alas! Not even free 'lancing'? Something to look forward to, I suppose. The slooty union of tramps, temptresses and femboys shall rise one day, mark my words!
...In all seriousness though, it's wonderful to see this continue to thrive as you work on your unique blend of smut exploration. I do agree some actual unique personalities would be lovely to have here and there, though it looks like you are also on your way with the traits stuff.
A best friend, or a slutty bestie with a heart of gold but a habit for finding trouble (and getting you in trouble as a result, if you don't leave him/her out to dry) could be fun. Could also be a neat intro to the prostitution angle, I suppose. ...I feel like I mentioned this before. Apologies if I have, haha!
Maybe a unique professor of some kind?
While it's not outright prostitution, what about things such as camming or vids? Seduce, corrupt, or join the roommate as they use their skills to pay the bills, mayhap?
This one is a little wild and randy, but maybe if you have a lover that is max love, horny, and aggressive, they go all free use mode, waking you up with sex, or doing the horizontal bop if they encounter you in the wild. (Or vice versa, haha!)
Cheers!